# USS Monitor

> 1862 unique ironclad; first in United States Navy service

**Wikidata**: [Q857891](https://www.wikidata.org/wiki/Q857891)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/USS_Monitor)  
**Source**: https://4ort.xyz/entity/uss-monitor


## References

1. Freebase Data Dumps. 2013
2. [List of NHLs by State. National Park Service](https://www.nps.gov/subjects/nationalhistoriclandmarks/list-of-nhls-by-state.htm)
3. USS MONITOR. National Register of Historic Places. 1974
4. BBC Things